Sewing machine



FIG. 1 is a left perspective view of a sewing machine, showing my newdesign;

FIG. 2 is a right perspective view thereof;

FIG. 3 is a front view thereof,

FIG. 4 is a rear view thereof,

FIG. 5 is a top plan view thereof,

FIG. 6 is a bottom view thereof,

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The ornamental design for a sewing machine, as shown and described.